Unsurprisingly, the Japanese feel ambivalent about nuclear power, but part of their energy needs could be answered by the country's tidal potential.

Deleon Gambel, 14, fights the current from the overflow of Buffalo Bayou as he makes his way through floodwaters from Tropical Storm Harvey while checking on neighbors in his apartment complex in Houston, Sunday, Aug. 27, 2017.
AP Photo/LM Otero
August 29, 2017